Source: https://github.com/gregkh/kernel-development/blob/master/graphs%2Fpatches_per_release%2Fcves_fixed_per_release.png

AI coding tools are pretty good at finding bugs and make it easier and faster to fix them.

Importantly, security vulnerabilities in new releases seem to stay roughly the same and the change to which bugs count as CVEs was around version 6.8 already.